Transport of Hydrocarbon Contaminants in Ice and Ice/Soil Systems

该奖项旨在支持三年以上的工作， 期 人们对水电的命运兴趣不大- 寒冷地区的碳污染物。 发生了有限 多年冻土等冻土中水分运动的研究。 冻结条件下污染物运移的研究 随着人们对极地地区人类活动的兴趣增加， 增加 这项工作有三个组成部分：1）实验室规模 研究影响冰中输运过程的机制， 土壤/冰系统; 2）两个地点的实地研究（一个是北极， 另一种是已知经历过烃类 污染;以及3）开发计算机模型， 冰和冰/土壤中碳氢化合物的分析和预测 系统. 土壤基质的时空变化 土壤污染物调查的重要方面。 数据 在物理实验室规模研究中收集的数据将作为 为方程式开发和记录提供基础支持， 排斥现象。 此外，他们将提供具体的 有关粘土和粉砂百分比影响的信息，以及 排除系数的三个组成部分， 污染物混合物（即，苯、甲苯和二甲苯）。 领域 研究数据将用于校准和验证运输 模型 这项研究将扩展目前正在做的工作， 碳氢化合物-地下水模型的主要研究员 冷冻条件下的相互作用

The proposed award is for the support of work over a three-year period. There has been little interest in the fate of hydro- carbon contaminants in cold regions. There has been limited research on water movement in such frozen soils as permafrost. Research on contaminant transport under freezing conditions has increased as interest in human activity in polar regions has increased. The work has three components: 1) bench-scale studies of mechanisms affecting transport processes in ice and soil/ice systems; 2) field studies of two locations (one arctic, the other antarctic) known to have experienced hydrocarbon contamination; and 3) development of a computer model to allow analysis and prediction of hydrocarbons in ice and ice/soil systems. Spatial and temporal variation in soil matrices are important aspects of soil contaminant investigations. Data collected in the physical bench-scale studies will serve as the underlying support for equation development and documentation of the exclusion phenomenon. Also, they will provide specific information on the effects of percent clay and silt, and on exclusion coefficients for the three components of the contaminant mixture (i.e., benzene,toluene and xylene). Field study data will serve to calibrate and validate a transport model. The research will extend current work being done by the Principal Investigators on modelling of hydrocarbon-groundwater interactions under freezing conditions.